koppel. >> a good portrait, in my point of view, makes you think that you're sitting in front of the person. >> reporter: new york portrait artist marvin mattelson sells his paintings for as much as $45,000 and agreed to let me sit for a quick 30-minute version. >> you can't please everyone, so there's only two people you want to please. you want to please yourself and you want to please your client. if anyone else is happy, that's a bonus. >> reporter: the duchess, an art history major herself, is said to be thrilled with her portrait. >> i'm done. >> reporter: all right. >> this is the finished study. >> reporter: oh, wow. what i see that you got is you -- the look in my eyes. and in the end, if the duchess likes hers too, that's all that really matters. kate snow, nbc news, new york. >> that's our broadcast on a friday night. and for this week. thank you for being here with us. i'm brian williams. lester holt will be here with you this weekend. we, of course, hope to see you right back here on monday. in the meantime, please have a good weekend. good night. >>> good evening and th